Find the area of rectangle whose length is 5.3cm and breadth is 3 cm.
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The diagonal of a rectangle is 10 units. The formula to find the diagonal is `d=sqrt(l^(2)+b^(2))`. Where l and b are length and breadth respectively.
Correct Answer - `l^(2)`
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The length of a rectangle is decreasing at a rate of 3 cm/sec and breadth is increasing at a rate of 4 cm/sec. Find the rate of change of its (a) peri
Correct Answer - `(a) 2 cm//sec (b) 4 cm^(2)//sec`,Increase
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(i) The two sides of a rectangle are x units and (10 - x) units. For what value of x, the area of rectangle will be maximum? (ii) Prove that a rectang
Correct Answer - x = 5
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Find the capacity of a closed cuboidal cistern whose length is 3 m, breadth is 2 m and height is 6 m. Also find the area of iron sheet required to mak
Correct Answer - `72m^(2)`
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If the perimeter of a rectangle is 10 cm and the difference between its length and breadth is 1 cm, then its length is ______ and its breadth is _____
Correct Answer - 3 cm and 2 cm
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Find the volume, the lateral surface area and the total surface area of the cuboid whose dimensions are: (i) length = 12 cm, breadth = 8 cm and height
Correct Answer - (i) `432 cm^(3), 180 cm^(2), 372 cm^(2)` (ii) `2366 m^(3), 520m^(2), 1248 m^(2)` (iii) `45 m^(3), 21 m^(2), 201 m^(2)` (iv) `36m^(3), 291 m^(2), 303 m^(2)`
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The perimeter of rectangle is 34cm and length of its diagonal is 13cm. Find the length and breadth of rectangle
let length of the rectangle be L and breadth be B so by the problem perimeter 2(IL+B)=34 => L+B =17 .......(1) => L2+B2+2LB=289 ..........(2) and the square of the diagonal = L2+B2=132 =169 .....(.3) By...
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Surface area of a cuboid whose length, breadth and height are 10 cm, 8 cm and 8 cm is
Correct option is (C) 448 cm2 Surface area of cuboid \(=2\,(lb+bh+hl)\) \(=2\,(10\times8+8\times8+8\times10)\) \(=2\,(80+64+80)\) \(=2\times224=448\,cm^2\)
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Surface area of a cuboid whose length, breadth and height are 10 cm, 8 cm and 8 cm is
2 Answers
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The length and breadth of a rectangle is 3 cm and 4 cm then the length of its diagonal is ……………….. cm.
Correct option is D) 5
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